Jet BP-1248H Service manual

Operating Instructions and Parts Manual
Box and Pan Brake
Model: BP-1248H
JET
427 New Sanford Road
LaVergne, Tennessee 37086 Part No. M-754100
Ph.: 800-274-6848 Revision C2 08/2014
www.jettools.com Copyright © 2014 JET

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Warranty and Service
JET warrants every product it sells against manufacturers’ defects. If one of our tools needs service or repair, please
contact Technical Service by calling 1-800-274-6846, 8AM to 5PM CST, Monday through Friday.
Warranty Period
The general warranty lasts for the time period specified in the literature included with your product or on the official
JET branded website.
•JET products carry a limited warranty which varies in duration based upon the product. (See chart below)
•Accessories carry a limited warranty of one year from the date of receipt.
•Consumable items are defined as expendable parts or accessories expected to become inoperable within a
reasonable amount of use and are covered by a 90 day limited warranty against manufacturer’s defects.
Who is Covered
This warranty covers only the initial purchaser of the product from the date of delivery.
What is Covered
This warranty covers any defects in workmanship or materials subject to the limitations stated below. This warranty
does not cover failures due directly or indirectly to misuse, abuse, negligence or accidents, normal wear-and-tear,
improper repair, alterations or lack of maintenance. JET woodworking machinery is designed to be used with Wood.
Use of these machines in the processing of metal, plastics, or other materials may void the warranty. The exceptions
are acrylics and other natural items that are made specifically for wood turning.
Warranty Limitations
Woodworking products with a Five Year Warranty that are used for commercial or industrial purposes default to a
Two Year Warranty. Please contact Technical Service at 1-800-274-6846 for further clarification.
How to Get Technical Support
Please contact Technical Service by calling 1-800-274-6846. Please note that you will be asked to provide proof
of initial purchase when calling. If a product requires further inspection, the Technical Service representative will
explain and assist with any additional action needed. JET has Authorized Service Centers located throughout the
United States. For the name of an Authorized Service Center in your area call 1-800-274-6846 or use the Service
Center Locator on the JET website.
More Information
JET is constantly adding new products. For complete, up-to-date product information, check with your local distributor
or visit the JET website.
How State Law Applies
This warranty gives you specific legal rights, subject to applicable state law.
Limitations on This Warranty
JET LIMITS ALL IMPLIED WARRANTIES TO THE PERIOD OF THE LIMITED WARRANTY FOR EACH PRODUCT.
EXCEPT AS STATED HEREIN, ANY IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE ARE EXCLUDED. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN
IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU.
JET SHALL IN NO EVENT BE LIABLE FOR DEATH, INJURIES TO PERSONS OR PROPERTY, OR FOR
INCIDENTAL, CONTINGENT, SPECIAL, OR CONSEQUENTIAL DAMAGES ARISING FROM THE USE OF OUR
PRODUCTS. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU.
JET sells through distributors only. The specifications listed in JET printed materials and on official JET website are
given as general information and are not binding. JET reserves the right to effect at any time, without prior notice,
those alterations to parts, fittings, and accessory equipment which they may deem necessary for any reason
whatsoever. JET®branded products are not sold in Canada by JPW Industries, Inc.
Product Listing with Warranty Period
90 Days – Parts; Consumable items; Light-Duty Air Tools
1 Year – Motors; Machine Accessories; Heavy-Duty Air Tools; Pro-Duty Air Tools
2 Year – Metalworking Machinery; Electric Hoists, Electric Hoist Accessories; Woodworking Machinery used
for industrial or commercial purposes
5 Year – Woodworking Machinery
Limited Lifetime – JET Parallel clamps; VOLT Series Electric Hoists; Manual Hoists; Manual Hoist
Accessories; Shop Tools; Warehouse & Dock products; Hand Tools
NOTE: JET is a division of JPW Industries, Inc. References in this document to JET also apply to JPW Industries,
Inc., or any of its successors in interest to the JET brand.

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Warning
1. Read and understand the entire owners manual before attempting assembly or operation.
2. Read and understand the warnings posted on the machine and in this manual. Failure to comply with all of
these warnings may cause serious injury.
3. Replace the warning labels if they become obscured or removed.
4. This box & pan brake is designed and intended for use by properly trained and experienced personnel
only. If you are not familiar with the proper and safe operation of a box & pan brake, do not use until proper
training and knowledge have been obtained.
5. Do not use this box & pan brake for other than its intended use. If used for other purposes, JET disclaims
any real or implied warranty and holds itself harmless from any injury that may result from that use.
6. Always wear approved safety glasses/face shields while using this box & pan brake. Everyday eyeglasses
only have impact resistant lenses; they are not safety glasses.
7. Before operating this box & pan brake, remove tie, rings, watches and other jewelry, and roll sleeves up
past the elbows. Remove all loose clothing and confine long hair. Non-slip footwear or anti-skid floor strips
are recommended. Do not wear gloves.
8. Wear ear protectors (plugs or muffs) during extended periods of operation.
9. Some dust created by power sanding, sawing, grinding, drilling and other construction activities contain
chemicals known to cause cancer, birth defects or other reproductive harm. Some examples of these
chemicals are:
•Lead from lead based paint.
•Crystalline silica from bricks, cement and other masonry products.
•Arsenic and chromium from chemically treated lumber.
Your risk of exposure varies, depending on how often you do this type of work. To reduce your exposure to
these chemicals, work in a well-ventilated area and work with approved safety equipment, such as face or
dust masks that are specifically designed to filter out microscopic particles.
10. Do not operate this machine while tired or under the influence of drugs, alcohol or any medication.
11. Make certain the switch is in the OFF position before connecting the machine to the power supply.
12. Make certain the machine is properly grounded.
13. Make all machine adjustments or maintenance with the machine unplugged from the power source.
14. Remove adjusting keys and wrenches. Form a habit of checking to see that keys and adjusting wrenches
are removed from the machine before turning it on.
15. Keep safety guards in place at all times when the machine is in use. If removed for maintenance purposes,
use extreme caution and replace the guards immediately.
16. Make sure the box & pan brake is firmly secured to the floor or bench before use.
17. Check damaged parts. Before further use of the machine, a guard or other part that is damaged should be
carefully checked to determine that it will operate properly and perform its intended function. Check for
alignment of moving parts, binding of moving parts, breakage of parts, mounting and any other conditions
that may affect its operation. A guard or other part that is damaged should be properly repaired or
replaced.
18. Provide for adequate space surrounding work area and non-glare, overhead lighting.
19. Keep the floor around the machine clean and free of scrap material, oil and grease.
20. Keep visitors a safe distance from the work area. Keep children away.
21. Make your workshop child proof with padlocks, master switches or by removing starter keys.
22. Give your work undivided attention. Looking around, carrying on a conversation and “horse-play” are
careless acts that can result in serious injury.

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23. Maintain a balanced stance at all times so that you do not fall or lean against the machine or other moving
parts. Do not overreach or use excessive force to perform any machine operation.
24. Use the right tool at the correct speed and feed rate. Do not force a tool or attachment to do a job for which
it was not designed. The right tool will do the job better and safer.
25. Use recommended accessories; improper accessories may be hazardous.
26. Maintain tools with care. Keep machine sharp and clean for the best and safest performance. Follow
instructions for lubricating and changing accessories.
27. Make sure the work piece is securely attached or clamped to the table. Never use your hand to hold the
work piece.
28. Turn off the machine before cleaning. Use a brush or compressed air to remove chips or debris — do not
use your hands.
29. Do not stand on the machine. Serious injury could occur if the machine tips over.
30. Never leave the machine running unattended. Turn the power off and do not leave the machine until it
comes to a complete stop.
31. Remove loose items and unnecessary work pieces from the area before starting the machine.
Familiarize yourself with the following safety notices used in this manual:
This means that if precautions are not heeded, it may result in minor injury and/or
possible machine damage.
This means that if precautions are not heeded, it may result in serious injury or possibly
even death.
- - SAVE THESE INSTRUCTIONS - -

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Introduction
This manual is provided by JET covering the safe operation and maintenance procedures for a Model
BP-1248H Box & Pan Brake. This manual contains instructions on installation, safety precautions, general
operating procedures, maintenance instructions and parts breakdown. This machine has been designed and
constructed to provide years of trouble free operation if used in accordance with instructions set forth in this
manual. If there are any questions or comments, please contact either your local supplier or JET. JET can also
be reached at our web site: www.jettools.com.
Specifications
Model Number:....................................................................................................................................... BP-1248H
Stock Number: ............................................................................................................................................754100
Capacity (mild steel).................................................................................................................................12 gauge
Bending Length Capacity...................................................................................................................................48”
Maximum Box Depth............................................................................................................................................4”
Maximum Lift of Beam ...................................................................................................................................1-1/2”
Beam Adjustment..............................................................................................................................................7/8”
Number of Fingers and Width...................................................................................................5@3”, 2@4”, 5@5”
Finger Nose Angle .............................................................................................................................................45
Finger Nose Radius ........................................................................................................................................1/32”
Overall Dimensions (Width x Depth x Height)................................................................................72” x 52 x 33.5”
Weight (net/shipping) .................................................................................................................... 1757 / 1940 lbs.
The above specifications were current at the time this manual was published, but because of our policy of
continuous improvement, JET reserves the right to change specifications at any time and without prior notice,
without incurring obligations.
Read and understand the entire contents of this manual before attempting set-up or
operation! Failure to comply may cause serious injury.

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Unpacking
1. Remove the crate from around the machine.
2. Carefully clean all rust protected surfaces with
a mild solvent or kerosene and a soft rag. Do
not use lacquer thinner, paint thinner, or
gasoline. These will damage painted surfaces.
3. Coat all machined surfaces with a light coat of
oil to inhibit rust.
4. Remove the bolts holding the machine to the
skid.
5. Carefully move the machine to a well-lighted
area on a solid, level workbench, and secure
to the bench with lag screws or bolts.
6. Machine location must allow access to all
sides.
Assembly
The BP-1248H does not require assembly.
However, it is important to make sure that the
machine is level; otherwise the brake will not bend
properly.
Use a machinist’s level and shims if necessary.
Adjustments
The (#) in the text refers to the Item Number in the
Parts Breakdown section.
The apron assembly has been adjusted at the
factory for use with material having the capacity as
listed in the Specifications section. During
shipment of this unit the machine may have come
out of alignment.
The forward edge of the holddown fingers (41-1,
41-2, 41-3) should be adjusted parallel to the pivot
edge of the clamp block. Release clamping
pressure on the holddown assembly (34) by
pushing the clamp handles (31, 32) slightly to the
rear. Turn the hand knobs (58) to adjust for
parallel.
The center of the apron can be adjusted by
tightening the truss nut on the apron assembly.
Finger alignment can be achieved by loosening all
cap screws (38) and rotating the apron (1) to the
90-degree position. Push the fingers forward
against the bending leaf for proper alignment.
Tighten screws (38).
Operation
Adjusting for Metal Thickness
The holddown assembly (34) must be adjusted to
allow for clearance when making bends according
to the thickness of the material. Clearance for
material within four gauges of the capacity should
be twice the thickness of the material. For lighter
gauges use 1-1/2 times the thickness. The forward
edge of the holddown fingers should be adjusted
parallel to the pivot edge of the clamp block.
Release clamping pressure on the holddown
assembly by pushing clamp handles (31, 32)
slightly to the rear. Turn the hex cap screws (58)
to adjust for parallel and proper clearance. The
center of the holddown can be adjusted by
tightening the truss nut on the holddown assembly
(34).
Adjusting the Clamping Pressure
The clamping pressure should be adjusted
according to the thickness of the material. The
clamping pressure should be great enough to hold
the material securely in place but not so much that
it is difficult to lock the clamping handles (31, 32).
Clamping pressure can be adjusted by turning the
nuts (55) on the threaded rod portion of the yoke
assembly (29, 30).
Flange Capacity
The recommended minimum flange capacity is one
inch.
Repeat Bends
Adjust the stop collar (48) on the stop rod (21) to
limit the swing of the apron assembly.
Counter Weight
The counter weight (17) can be moved up or down
to provide more or less leverage.
Lubrication
The machine must be lubricated every day of
service with a few drops of oil. Oil pinholes are
located at both yoke assemblies (29, 30) and the
apron assembly (1) near the hinge pin (11). Lightly
oil the machined parts when not in use to prevent
rust.

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Parts List for BP-1248H Box and Pan Brake
To order parts or reach our service department, call 1-800-274-6848, Monday through Friday (see our website
for business hours, www.jettools.com). Having the Model Number and Serial Number of your machine available
when you call will allow us to serve you quickly and accurately.
Index No. Part No. Description Size Qty
1 ................BP1248N-1................ Apron Assembly....................................................... ......................................1
2 ................BP1248F-02.............. Bend Handle............................................................ ......................................2
3 ................TS-1505011 .............. Socket Head Cap Screw..........................................M10x16.........................4
4 ................BP1248F-04.............. Insert Bar................................................................. ......................................1
5 ................BP1248F-05.............. Bottom Bar............................................................... ......................................1
6 ................TS-1505021 .............. Socket Head Cap Screw..........................................M10x20.........................9
7 ................BP1248F-07.............. Angle Bar................................................................. ......................................1
8 ................TS-1506021 .............. Socket Head Cap Screw..........................................M12x25.........................4
9 ................BP1248N-9................ Hinge (R.H).............................................................. ......................................1
10 ..............BP1248N-10.............. Hinge (L.H) .............................................................. ......................................1
11 ..............BP1248N-11.............. Hinge Pin................................................................. ......................................2
12 ..............TS-1506041 .............. Socket Head Cap Screw..........................................M12x35.........................2
13 ..............TS-1499141 .............. Hex Cap Screw........................................................M12x80.......................10
14 ..............TS-1525051 .............. Socket Set Screw ...................................................M10x25.........................2
15 ..............TS-1506071 .............. Socket Head Cap Screw..........................................M12x50.........................2
16..............BP1248F-16.............. Rod.......................................................................... ......................................2

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Index No. Part No. Description Size Qty
17 ..............BP1248N-17.............. Counter Weight Assembly....................................... ......................................2
18 ..............BP1248N-18.............. Stand Assy............................................................... ......................................2
19 ..............TS-1492041 .............. Hex Cap Screw........................................................M12x40.........................6
20 ..............TS-2311121 .............. Hex Nut ...................................................................Full M12........................6
21 ..............BP1248F-21.............. Rod Gauge Assembly.............................................. ......................................1
22..............BP1248N-22..............Box, Adj. Assembly.................................................. ......................................1
23 ..............BP1248N-23.............. Bushing (2) .............................................................. ......................................2
24 ..............BP1248N-24.............. Base Assembly........................................................ ......................................1
25..............BP1248N-25..............Bolt Adj. Assembly................................................... ......................................2
26 ..............BP1248N-26.............. Holder...................................................................... ......................................2
27 ..............TS-1506021 .............. Socket Head Cap Screw..........................................M12x25.........................5
28 ..............BP1248F-28.............. Swivel Pin Assembly................................................ ......................................2
29 ..............BP1248N-29.............. Yoke Assy (R.H)...................................................... ......................................1
30 ..............BP1248N-30.............. Yoke Assy (L.H)....................................................... ......................................1
31 ..............BP1248N-31.............. Clamp Handle (R.H) ................................................ ......................................1
32 ..............BP1248N-32.............. Clamp Handle (L.H)................................................. ......................................1
33 ..............BP1248N-33.............. Scale........................................................................ ......................................1
34 ..............BP1248N-34.............. Hold Down Assembly............................................... ......................................1
35 ..............TS-1506021 .............. Socket Head Cap Screw..........................................M12x25.......................12
36 ..............TS-1491081 .............. Hex Cap Screw .......................................................M10x50.......................24
37-1...........BP1248N-37-4 .......... Joint Open ...............................................................5"...................................5
37-2...........BP1248N-37-3 .......... Joint Open ...............................................................4"...................................2
37-3...........BP1248N-37-2 .......... Joint Open ...............................................................3”...................................5
38 ..............TS-1491061 .............. Hex Cap Screw........................................................M10x40.......................12
39-1...........BP1248N-39-4 .......... Holder, Finger..........................................................5"...................................5
39-2...........BP1248N-39-3 .......... Holder, Finger..........................................................4"...................................2
39-3...........BP1248N-39-2 .......... Holder, Finger..........................................................3”...................................5
40-1...........BP1248N-40-4 .......... Washer, Finger........................................................5"...................................5
40-2...........BP1248N-40-3 .......... Washer, Finger........................................................4"...................................2
40-3...........BP1248N-40-2 .......... Washer, Finger........................................................3”...................................5
41-1...........BP1248N-41-1 .......... Finger.......................................................................5"...................................5
41-2...........BP1248F-39.............. Finger.......................................................................4"...................................2
41-3...........BP1248F-38.............. Finger.......................................................................3”...................................5
42 ..............TS-2311121 .............. Hex Nut ...................................................................Full M12......................10
43 ..............TS-2361121 .............. Lock Washer............................................................M12.............................10
44 ..............TS-2360121 .............. Flat Washer .............................................................M12...............................1
45 ..............BP1248N-45.............. Bracket Bar.............................................................. ......................................1
46 ..............BP1248N-46.............. Insert Clamp Bar...................................................... ......................................1
47 ..............BP1248N-47.............. Cotter Pin ................................................................2.5x18...........................1
48 ..............BP1248N-48.............. Stop Collar............................................................... ......................................1
49 ..............TS-1505021 .............. Socket Head Cap Screw..........................................M10x20.........................2
50 ..............TS-2360121 .............. Flat Washer .............................................................M12...............................1
51 ..............TS-2311121 .............. Hex Nut....................................................................M12...............................1
52 ..............BP1248N-52.............. Spring Pin................................................................5x30..............................2
53 ..............TS-1525041 .............. Socket Set Screw ...................................................M10x20.........................2
54 ..............TS-1506071 .............. Socket Head Cap Screw..........................................M12x50.........................2
55 ..............TS-2311241 .............. Hex Nut ...................................................................Full M24........................4
56..............BP1248N-56..............Clip Ring 38............................................................. ......................................2
57 ..............TS-1506041 .............. Socket Head Cap Screw..........................................M12x35.........................2
58 ..............BP1248N-58.............. Knob Lock................................................................ ......................................2
59 ..............BP1248N-59.............. Bushing (1) .............................................................. ......................................2
60 ..............BP1248N-60.............. Angle Scale.............................................................. ......................................1